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3 years ago

Do you think it is alright for a girl to try to win a race for a bike ride explain your answers

Physics

2 answers:

vladimir2022 [97]3 years ago

5 0

Girls have the same abilities as men

Korvikt [17]3 years ago

4 0

Of course! Why not? Explain why? Um, because girls are capable of doing things.

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What is maxwell’s theory about atoms?

Inga [223]

To put it another way, stationary states are the same as time-independent currents. Moreover, such currents are not sources of radiation, according to Maxwell's theory. The atom will remain in its natural state and will not collapse due to a shortage of energy.

4 0

3 years ago

Read 2 more answers

Jenny is studying a compound that has two oxygen atoms and one nitrogen atom. Which statement describes the subscripts she will

STALIN [3.7K]

Answer:

She will use one 2 as a subscript.

Explanation:

Nitrogen is a chemical element with the symbol "N" and has an atomic number of 7. Thus, it is found in group (5) of the periodic table and as such it has 5 electrons in its outermost shell. Therefore, nitrogen has two (5) valence electrons.

On the other hand, oxygen has an atomic number of 8 and with the symbol "O."

When nitrogen and oxygen react chemically, they produce a compound known as nitrogen dioxide $NO_{2}$

In this scenario, Jenny is studying a compound that has two oxygen atoms and one nitrogen atom. Therefore, the statement which describes the subscripts she will use to write the chemical formula is, she will use one 2 as a subscript.

$N + O_{2} ------> NO_{2}$

Where: 2 represents the subscript of oxygen.

7 0

3 years ago

Which device can change the voltage of an incoming current?

yawa3891 [41]

C. A transformer (ignore these words)

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4 years ago

A human expedition lands on an alien planet. One of the explorers is able to jump a maximum distance of 14.5 m with an initial s

max2010maxim [7]

Answer:

0.215 $\frac{m}{s^{2} }$

Explanation:

by using the equations of the constant acceleration motion or uniformly accelerated rectilinear motion:

V= $v_0}$ + a⋅t

X= $X_0}$ + $v_0}$ *t + $\frac{a}{2} * t^{2}$

in this case $X_0}$ = 0, $v_0}$ = 2.5 and X= 14.5.

replacing those numbers in the equations,and knowing that a gravitational acceleration is always negative :

1. V= 2.5 - a⋅t

2. 14.5=2.5 *t - $\frac{a}{2} * t^{2}$

we have 2 unknowns (g and t) ,so this can be solve by the Substitution Method :

0= 2.5 - a⋅t

V in this case will be 0,because the speed at the maximum distance is 0.

by solving for a:

3. a= $\frac{2.5}{t}$

and replacing in 2. :

14.5=2.5 *t - $\frac{2.5}{2t} *\ t^{2$

14.5=2.5 *t - $\frac{2.5t}{2}$

14.5= $\frac{2.5t}{2}$

by solving for t:

t = $\frac{14.5 * 2}{2.5}$

t= 11.6 s

with this value of t,replacing in 3. :

a= $\frac{2.5}{11.6}$

a= 0.215

3 0

3 years ago

The noble gases neon (atomic mass 20.1797 u) and krypton (atomic mass 83.798 u) are accidentally mixed in a vessel that has a te

vagabundo [1.1K]

Answer:

(a) Kav Ne = Kav Kr = 7.29x10⁻²¹J

(b) v(rms) Ne= 659.6m/s and v(rms) Kr= 323.7m/s

Explanation:

(a) According to the kinetic theory of gases the average kinetic energy of the gases can be calculated by:

$K_{av} = \frac{3}{2}kT$ (1)

where $K_{av}$ : is the kinetic energy, k: Boltzmann constant = 1.38x10⁻²³J/K, and T: is the temperature

From equation (1), we can calculate the average kinetic energies for the krypton and the neon:

$K_{av} = \frac{3}{2} (1.38\cdot 10^{-23} \frac{J}{K})(352.2K) = 7.29\cdot 10^{-21}J$

(b) The rms speeds of the gases can be calculated by:

$K_{av} = \frac{1}{2}mv_{rms}^{2} \rightarrow v_{rms} = \sqrt \frac{2K_{av}}{m}$

where m: is the mass of the gases and $v_{rms}$ : is the root mean square speed of the gases

For the neon:

$v_{rms} = \sqrt \frac{2(7.29 \cdot 10^{-21}J)}{20.1797 \frac{g}{mol} \cdot \frac {1mol}{6.022\cdot 10^{23}molecules} \cdot \frac{1kg}{1000g}} = 659.6 \frac{m}{s}$

For the krypton:

$v_{rms} = \sqrt \frac{2(7.29 \cdot 10^{-21}J)}{83.798 \frac{g}{mol} \cdot \frac {1mol}{6.022\cdot 10^{23}molecules} \cdot \frac{1kg}{1000g}} = 323.7 \frac{m}{s}$

Have a nice day!

3 0

3 years ago